.mid{
    width: 900px;
    margin: 0 auto;
    padding: 0 30px;
    background: white;
}
.mid img{
    display: block;
    margin: 20px auto;
}
.mid h1{
    display: block;
    padding: 30px 0;
}
.mid td{
    height: 50px;
}
.b1{
    max-width: 300px;
}
.mid table{
    padding: 30px;
}